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Network Router User Manual

ManualsBrandsNortel Networks ManualsNetwork RouterNortel Secure Router 2330
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SSM will receive the incoming calls from SPS that are destined for PSTN. For such calls
SSM will not be able to find a mapped contact in its registration cache and hence routes the
call to configured default gateway which is SIP GW.
The following diagram shows the call flow between a branch PSTN interface/device and
branch SIP endpoint.